https://www.jameswjesso.com/transcript-psychedelic-psychotherapy-a-conversation-with-three-underground-providers-attmind-90/
There is an article published by Psychedelic Times posted a couple years ago about the Shadow of undergound entheogenic use. I would like to think that underground therapies are also very important right now, as the conventional, coded, and 'official' world of clinics, certified therapy, and research catch up.